Quick slang lesson: To get "curved" means to be destroyed. Eviscerated. Totally and utterly shot down. Now, when the most annoying person you can think of gets what they deserve, you've got a fun tune to sing in their dumb face.
Breaking up may be hard to do, but you know what's harder? Staying in tune while singing complicated a cappella arrangements. Turns out music soothes both the savage beast and the savage burn.